234 



ZOOLOGY OF THE FAR EAST. 



It should be noted that the specimens from Mergui^ recorded by de Man in 1888 

 under the name 5. livida, have since been described by him as a new species — S. 

 onychophora} 



Sesarma andersoni, de Man. 



1888. Sesarma andersoni, de Man, Journ. Linn. Soc, XXII, p. 172, pi. xii, figs. 1-4. 

 1917. Sesarma (Parasesarma) andersoni, Tesch, Zool. Meded. Mus. Leiden, III, p. 129. 



A single specimen, with carapace 8-6 mm. in breadth, was obtained by Dr. 

 Annandale at Kantang in Trang, on the west coast of peninsular Siam. It was 

 caught running on the piers of the landing stage above water-level. 



Sesarma edwardsi, de Man. 



1888. Sesarma edwardsi, de Man, Journ. Linn. Soc, XXII, p. 185, pi. xiii, figs. 1-4. 



1917. Sesarma {Sesarma) edwardsi, Tesch, ZooL Meded. Mus. Leiden, III, p. 147. 



Two males and one female, the largest with carapace 15 J mm. in breadth, were 

 found in the Patani River in the Siamese Malay States. The specimens were obtained 

 in fresh water, but in a locality subject to tidal influence. 



Sesarma intermedium (de Haan). 



1865. Sesarma intermedia, Heller, Reise ' Novara ', Crust., p. 64. 



1918. Sesarma {Sesarma) intermedium, Tesch, ZooL Meded. Mus. Leiden, III, pp. 162, 243. 



Two males from Shanghai are referred to this species. The carapace of the 

 larger is 27 mm. in length and 31 mm. in greatest breadth ; that of the smaller is 



i7'5 mm. in length and 20'8 mm. in breadth. In 

 both specimens there is a single well marked tooth 

 on the lateral margin behind the extra-orbital 

 angle, but further back there is scarcely a trace of 

 a rudimentary third lateral tooth, such as has 

 been described in certain Sesarma referred to this 

 species. 



The crest on the upper margin of the merus 

 of the chelipedes does not possess a subterminal 

 tooth, as in 5. tetragonum ; the upper surface of 

 the carpus is smooth and its inner margin bears a 

 few small tubercles, but is not toothed. The up- 

 per margin of the palm is defined by an obscure 

 and feebly crenulate ridge ; its outer surface shows 

 only the slightest traces of rugosity, but bears the 

 oblique longitudinal line referred to by Tesch. 

 The fingers are smooth except for a slight tubercu- 

 lation on the dorsal surface of the dactylus near its 

 proximal end. In both specimens the fingers gape, 

 meeting only at the tips, the extent of the gape 

 being very much greater in the larger specimen. 



<«- 



Fig. 2. — Sesarma intermedium (de Haan). 



a. Left chela of a specimen 27 mm. 



in length. 



b. I,eft chela of a specimen 17-5 mm. 



in length. 



De Man, Zool. Jahrb., Syst., IX, p. 2r4 (1895), and X, pi. xxxi, fig. 39, 



